Figure 4

Vertical profiles of nitrate at stations along the 27°N transect (stations 22–33 as shown in Fig. 1) in the Florida Straits. The symbols indicate the depth at which samples were taken at a given station. Note an increasing nitrate gradient below the mixed layer with decreasing water depths toward the western coast. The station bottom depth (see Table 1) is approximately 10 m below the deepest sample taken at stations deeper than 100 m and 5 m at stations shallower than 100 m.